Q: Which equation best represents the Nernst equation for calculating the equilibrium potential for an ion?

$$E = \frac{RT}{zF} \ln \left( \frac{[\text{ion}]_{\text{outside}}}{[\text{ion}]_{\text{inside}}} \right)$$

Question 1

Which structure in the neuron diagram is responsible for receiving incoming signals from other neurons?

Accepted Answer

Dendrites

Question 2

Which part of the brain, as shown in the diagram, is primarily responsible for coordination and balance?

Accepted Answer

Cerebellum

Question 3

Which spinal nerve region is responsible for innervating the diaphragm, as shown in the spinal nerve diagram?

Accepted Answer

Cervical nerves

Question 4

Which glial cell type is responsible for forming the myelin sheath in the central nervous system (CNS)?

Accepted Answer

Oligodendrocytes

Question 5

During an action potential, which ion rapidly enters the neuron causing depolarization?

Accepted Answer

Sodium (Na$$^+)$$

Question 6

Which cranial nerve is responsible for transmitting visual information from the retina to the brain?

Accepted Answer

Optic nerve (II)

Question 7

Which of the following best describes the function of the sympathetic nervous system?

Accepted Answer

Prepares the body for 'fight or flight' responses

Question 8

A patient presents with loss of sensation and movement in the legs but normal function in the arms. Which spinal nerve region is most likely affected?

Accepted Answer

Lumbar nerves

Question 9

Which equation best represents the Nernst equation for calculating the equilibrium potential for an ion?

Accepted Answer

$$E = \frac{RT}{zF} \ln \left( \frac{[	ext{ion}]_{	ext{outside}}}{[	ext{ion}]_{	ext{inside}}} ight)$$

Question 10

Which of the following is a mixed cranial nerve, carrying both sensory and motor fibers?

Accepted Answer

Facial nerve (VII)

Question 11

Which structure in the neuron diagram is responsible for speeding up the transmission of electrical impulses?

Accepted Answer

Myelin sheath

Question 12

Which brain structure acts as a relay station for sensory information (except smell) on its way to the cerebral cortex?

Accepted Answer

Thalamus

Question 13

Which of the following best describes the function of the parasympathetic nervous system?

Accepted Answer

Promotes 'rest and digest' activities

Question 14

Which type of glial cell is responsible for removing debris and pathogens in the CNS?

Accepted Answer

Microglia

Question 15

A patient has difficulty swallowing and a hoarse voice. Which cranial nerve is most likely affected?

Accepted Answer

Vagus nerve (X)

Question 16

Which equation describes the relationship between membrane potential, ion permeability, and ion concentrations (Goldman-Hodgkin-Katz equation)?

Accepted Answer

$$V_m = \frac{RT}{F} \ln \left( \frac{P_{K^+}[K^+]_{out} + P_{Na^+}[Na^+]_{out} + P_{Cl^-}[Cl^-]_{in}}{P_{K^+}[K^+]_{in} + P_{Na^+}[Na^+]_{in} + P_{Cl^-}[Cl^-]_{out}} \right)$$

Question 17

Which spinal nerve plexus is responsible for innervating the muscles of the upper limb?

Accepted Answer

Brachial plexus

Question 18

Which part of the neuron is responsible for transmitting the action potential away from the cell body?

Accepted Answer

Axon

Question 19

Which cranial nerve is purely sensory and responsible for the sense of smell?

Accepted Answer

Olfactory nerve (I)

Question 20

A patient with a spinal cord injury at the level of T6 would most likely lose function in which area?

Accepted Answer

Chest and abdominal muscles

Study Notes: The Nervous System – Structure, Function, and Anatomy

Study Guide - Practice Questions

Study Guide - Flashcards